Check appliance and extension cords for worn, cracked, or frayed insulation. Worn cords pose both fire and shock hazards. Most electrical cords are insulated in vinyl compounds that must be supple to be effective. If the insulation looks or feels dried out, it’s worn out. Check closely for fraying where cord meets plug — this is where metal wires are most likely to be exposed by cracked insulation. Replace all electrical cords showing any sign of wear.

 

As a general safety rule, never route electrical cords underneath carpets or heavy objects, such as furniture legs. The cord can overheat and cause a fire.